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Architecture with distributed CBC

A distributed system would imply that although the SMART system is installed outside the network
of the mobile operator, the CBC is deployed within it. As a result of this, the SMART system should
have an interface for each CBC installed on each of the mobile operators. The advantages of such
solutions focuses on the fact that mobile operators are not required to disclose information about
the position and coverage of their cells. Because of this, it is necessary to develop mechanisms of
cell load information to inform external system about the change of information in a cell.

This also implies strong consequences for the translation of the respective polygon geographic
(longitude / latitude) to specific cells located within the respective area covered by the polygon.
Dynamic changes in the radial structures (especially on 3G networks) need not be reported to the
SMART system because sending messages CBC to BSC and RNC of operators will be managed within
their own facilities. Additionally, mobile operators can also use the CBC for other commercial
services. This also allows the operators to decide the vendor of CBC equipment.
However, as the intermediary will only transmit information respective of polygon to CBC (longitude
/ latitude) and not the ID information of the cell, an additional intermediate component between
the intermediary and the CBC would be needed in the equipment room of the mobile operator. The
component is called portal (gateway) CMSP. This component is responsible for translating the
polygon information (latitude / longitude) to the ID of the respective cells of the relevant mobile
operator. Each component in the portal (GW) CMSP will be customized according to the CBC
interface to which ones connect.

Figure 75 – Diagram of solution with distributed CBC (Cell Broadcast Center)

In this scheme operators can use a different brand of CBC for each of them, as one2many, Huawei,
Alcatel‐Lucent and others.

316 ITU‐T's Technical Reports and Specifications